CRASSULACE^. (ORPINE FAMILY.) 177 



2. TILL^A, :\Iich. 



Sepals, petals, stameus, and pistils 3 or 4. Pods 2 - mauy-seeded. — Very 

 small tufted auuuals, with opposite entire leaves aud axillary flowers. (Named 

 in honor of Micliael Angelp Tilli, an early Italian botanist.) 



I. T. simplex, Nutt. Eooting at the base (1-2' high); leaves linear- 

 oblong ; flowers solitary, nearly sessile ; calyx half the length of the (greeuisli- 

 trhite) petals and the narrow 8- 10-seeded pods, the latter with a scale at the 

 base of each. — •]Muddy river-banks, Mass. to Md. July -Sept. 



3. SEDUM, Tourn. Stoxe-crop. Orpine. 



Sepals and petals 4 or 5. Stamens 8 or 10. Follicles many-seeded; a little 

 scale at the base of each. — Chiefly perennial, smooth, and thick-leaved herbs, 

 with tlie flowers cymose or one-sided. Petals almost always narrow and acute 

 or pointed. (Name from sedeo, to sit, alluding to the manner in which these 

 plants fix tJieniselves upon rocks and walls.) 



* Flowers perfect and sessile, as it were spiked alo))g one side of spreading flower- 



ing branches or of the divisions of a scorpioid c//me, the first or central flower 

 mostlij b-merous and lO-androus, the others often i-mei-ous and 8-androus. 

 ■*- Flowers white or purple. 



1. S. pulchellum, Michx. Stems ascending or trailing (4- 12' high); 

 leaves terete, linear fi I if arm, much crowded ; spikes of the cyme several, densely 

 flowered ; petals rose-purple. — Va. to Ga., Avest to Ky., E. Kan., aud Tex. ; 

 also cultivated in gardens. July. 



2. S. Nevii, Gray. Stems spreading, simple (.3-5' high); leaves all alter- 

 nate, those of the sterile shoots ivedge-obovate or spatulate, on flowering stems 

 linear-spat id ate and flatti.sh ; cyme about 3-spiked, densely flowered; petals 

 ivhite, more pointed than in the next; the flowering 3 or 4 weeks later; leaves 

 and blossoms smaller. — Rocky cliffs, mountains of Ya. to Ala. 



3. S. ternatum, Michx. Stems spreading (3 -6' high); leaves flat, the 

 lower whorled in threes, wedge-obovate, the upper scattered, oblong ; cyme 3-spiked, 

 leafy ; petals white. — Rocky woods, X. Y. to Ga., west to Ind. and Tenn, 



-t- •<- Flowers i/ellow. 



S. Acre, L. (Mossy Stoxe-crop.) Spreading on the ground, moss-like; 

 leaves very small, alternate, almost imbricated on the branches, ovate, very 

 thick; petals yellow. — Escaped from cultivation to rocky roadsides, etc. 

 July. (Xat. from Eu.) 



4. S. Torreyi, Don. Annual ; stems simple or branched innn the base 

 (2-4' high) ; leaves flat or teretish, scattered, oblong, 2-3" long; petals rather 

 longer than the ovate sepals ; carpels at length widely divergent. — Mo. to 

 Ark. and Tex. 



* * Flowers in a terminal naked and regular cgnie or cluster, more or less pedwi- 



cled ; leaves flat, obovate or oblong, mostlg alternate. 

 -t- Floivers perfect, b-merons, lO-androiis. 



5. S. telephioides, Michx. Stems ascending (6- 12' high), stout, leafy 

 to the top; leaves oblong or oval, entire or sparingly toothed ; cyme small; 

 petals flesh-color, ovate-lanceolate, taper-pointed ; follicles tapering into a slendff 

 style. — T)rv rocks, from western New York to N. Ga. and S. Ind. June. 



